Gryllacrididae and Tettigoniidae (Insecta, Orthoptera, Ensifera) from Espiritu Santo, Vanuatu Sylvain HUGEL INCI, UPR 3212 CNRS, Université de Strasbourg, 21 rue René Descartes, F-67084 Strasbourg cedex (France)
[email protected] Hugel S. 2009. — Gryllacrididae and Tettigoniidae (Insecta, Orthoptera, Ensifera) from Espiritu Santo, Vanuatu. Zoosystema 31 (3) : 525-576. ABSTRACT In the present article, the Gryllacrididae and Tettigoniidae fauna of Espiritu Santo Island (Vanuatu) is examined. We took advantage of the examination of the material collected during the SANTO 2006 biological survey to give descrip- tion complements, or to redescribe and/or redefi ne the concerned species and genera. We recorded 15 species in the island. Five are recorded for the fi rst time in Espiritu Santo and in the Vanuatu archipelago. A 16th species, Conocephalus laetus (Redtenbacher, 1891), recorded by Willemse (1925) has not been collected during the survey. Two new Gryllacrididae Amphibologryllacris butmasi n. sp. and Psilogryllacris tchancha n. sp. are described. Amphibologryllacris macrocera (Walker, 1869) is redescribed. Amphibologryllacris poultoni (Willemse, 1925) is synonymised under A. macrocera. Th e two related genera Amphibologryllacris and Nannogryllacris are redefi ned. All Xanthogryllacris punctipennis (Walker, 1869) subspecies recognized by Karny are re-established as subspecies under this genus: X. p. punctipennis (Walker, 1869); X. p. confl uens (Griffi ni, 1909); X. p. erimae (Griffi ni, 1909); X. p. fenestrigera (Griffi ni, 1913); X. p. gemmicula (Hebard, 1922); X. p. keyica Karny, 1925 (n. comb.); X. p. zatricia Karny, 1928. Epacra cyaneoterminata Karny, 1935 is transferred to Amphibologryllacris. Th e song and stridulatory fi le of most Tettigoniidae occurring in Espiritu Santo are described, most of them for the fi rst time: Salomona redtenbacheri Brongniart, 1897; Phaneroptera gracilis Burmeister, 1838; Furnia insularis (Stål, 1876); Ityocephala francoisi Bolívar, 1909; Conocephalus upoluensis (Karny, 1907); C.